Tube-cutting machine.



PATENTED JULY 31, 1906.

N A M E E R W Tu TUBE CUTTING MAGHINE. APPLICATION FILED SEPT. 6,1905.

2 sums-sum 1.

Witnesses lnyentor M Attorneys N6- szmzv. PATENTED JULY 31, 1906.

J. w. FREEMAN. TUBE CUTTING MACHINE.

APPL IUATId N EILEn 'sEPT. 6.1905.-

2 SHEETS-SHEET 2.

' Witnesse lnvenior I T I I by 1 1 I I v ls Attorfleys This invention relates to metal-working I JOHN FREEMAN, or JOPLIN, MISSOURL Specification of Letters Patent. Application filed Saptember6,1905- Serial No- 277,240.

' TUBE-CUTTING MACHINE...

{Po-all whom; it may concern: 7 7

Be it known that 1', JOHN W. FREEMAN, "a

citizen of the United States, residing at Joplin, in the county of Jasper and State of Missouri, have invented a new and useful Tube- Cutting Machine, of which the following is a specification.

. machines, and has for its object to provide an improved tube-cutting machine wherein all of the parts arecompactly assembled and conveniently. accessible, so as to facilitate the manipulation thereof. a

Another object of the invention is to provide for the convenient adjustment of the work-holder,-so asto insure the proper rela-- tion of the work with respect to the rotary cutter whereby a true out may always be obtained. a

It is furthermore designed to provide a novel arrangement ofthe drive connection between the drive-pu1ley and the rotary cutter, whereby the latter may be brought into engagement with the work and also thrown out of engagement therewith without inter-- rupting the drive connection and *without sto i'ngthe machine. I a

, ith these and other objects in view the present invention consists in the combina tion and. arrangement of parts, ,as will be hereinafter more fully described, shown in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that ehangesin the form, proportion, size, and minor details may be made within the scope ofthe claims without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawings, Figure 1 is an elevation of a tube-cutting machine embodying the features of the present invention. Fig. 2 is an 'elevationlooking at another side thereof. Fig 3 is a sectional-elevation taken on the line 3 3 of Fig. 2. Fig. 4 is a top plan view of the machine. Fig. 5 is a plan section on the line 5 5 of Fig. 2. Figs.j6 and 7 are detail them views of the swingingframe for the support of the rotary cutter and the drive connections therefor. Figs. 8 and 9 are detail views illustrating a slightly-modified construction of g frame-sup ort. I

Like 0 aracters of re erence designate'cor:

; The operating parts-of thepresent machine are supported in an elevated position upon a suitable pedestal 1, which has a bed-plate'2 upon the top thereof. Upon the bed-plate there is a work holder or support made up of a rectangular [horizontal frame 3, within which is a pair of substantially parallel roll- Patented July 31, 1906.

ers 4, which are spaced so as to form a seat.

for the reception of a tube to be cut. -As best indicated in Fig. '5 of the drawings, it will be seen that the frame 3 is provided at one side with a horizontal ear 5, resting upon a similarear '6, projecting from the bed-plate, there bemg a bolt or other pivot connection .7 passed through the two ears, thereby to pivotally connect the frame with the. top of the pedestal,

Opposite the ears 5 and 6 there is an up standing boss or shoulder 8, provided upon the topv of the'pedestal, and from this shoulder there vegrtends a substantially horizontal threaded pin or projection 9, which loosely pierces an car 10 upon the adjacent side of the frame. A suitable nut 11 is provided uponthe outer end of the in 9 for engagement with the car 10 to admstably swing the work-holder upon thepivot-fastening '7 as a center. Upon one of the other sides of the frame there is a substantially horizontal ear 12, provided with an arcuate slot 13, struck from thepivot 7 as a center, and the top of the pedestal is provided with an upstanding threaded p' or. projection 14, rising from the slot 13 and rovided with aclamping-nut 15 to engage the top of the ear 12, and thereby lock the frame in any adjusted position.

Opposite the pivot-fastening 7 a standard 16 rises from the edestal and is provided at its upper end wit an arm 17, overha g the topv of the pedestal. Across the bac of this standard-there is a substantially horizontal. drive-shaft 1,8,.whichprojects at opposite sides of the standard and is provided upon what will be termed its outer end with the fast and loose pulleys 19 and 20: Between the pulleys and the standards there is a pinion 21, fixed upon the shaft. In front of the standard and between the arm 17 and the top of the pedestal there is a substan- -tially horizontal yoke-shaped frame 22,

which has its side ars 23'and 24straddling the standard and terminally pierced byltransverse openings loosely receiving the s aft 18 as a pivotal support. The arm 23 is-proresponding parts in each figure of the draw-.

the pinouter free end of the frame 22.

cleft or split longitudinally and provided with a cylindrical openi 27 constituting a bearin for a shaft 28, iifiiich projects at opposite si es ottheframe and carries a gear 29,- in l mesh with the gear 26, while its other end is- 1 provided with a cutting-disk 30, which is disposed in vertical alinement above the work-holder and in a plane at substantially right angles to the axes of the rollers 4.

For the adjustable support of the frame .22 a disk 31 is pivotally supported upon the arm 17 and is provided with a controlling-lever 32. A link 33 is pivotally supported upon a stud 34, carried eccentrically by the disk 31, the lower end of the link being pivotally connected to a pair of ears 35, provided upon the By raising and lowering the lever 32 the frame 22 will be swung vertically upon the shaft 18 as an axial support, whereby the rotary cutter 30 mayl be moved into and out of engagement wit the work. The link 33 is provided with a series of o enings 36 for individual engagement with t e stud 34.

-A belt shifting rod 37 works endwise through an opening in the standard 16 and is provi ed at one end with a handle 38 and at its opposite end with a pair of s aced fin ers 39 to engage opposite e ges of the driveelt for shifting the latter from one to the other of thepulle s, wherebythe drive of the machine is un er the convenient control of the operator.

In ractice the Work-holding frame 3 is adjuste upon the pin 7 as a center to bring the rollers 4 at right angles to the cutting-disk 30, after which the tube to be cut is su ported between the rollers, as indicated by dotted lines in Fig. 1 of the drawings, and then the handle or lever 32 is-de ressed, so as to swing the frame 22 downward y and bring the cutter into engagement with the tube, whereupon the rotation of the cutter will rotate the tube, and therewut the latter throughout its periphery. e advantage of the pivotal adjustment of the work-holder will now be understood, as it is essential that the work al ways he held at right angles to the plane of the cutter in order that the'latter may cut in a true circle rather than in a spiral ath.

Another important advantage of the present machine resides in the fact that the rotary cutter always remains in connection with the driveshaft throughout its up and down adjustments, and therefore there is no liability of the drive connection beoomin worn and impaired b successive u an down adjustments of t e frame 22. oreover it is not necessary to stop the operation of the machine when the rotary cutter is thrown outof en agement with the work, which materiall acilitates the handling of the machine. t will be noted that the several elements of the machine are compactly assembled, so as to take up comparatively little space and at the same time to be in convenient reach of the operator both for handling the work and controlling the machine.

In Fi s. 8 and 9 is illustrated a slightlymodifie construction of the swin ing frame. In this case the disk 31 is provi ed with an undercut groove 31, arranged for the recc tion of the head of a bolt 34, that may b adjusted to any desired distance from the axis of the disk and locked in position by a nut 34*. The outer end of the bolt serves to receive the link 33, and the parts are so constructed that adjustment may be effected for the cutting of pipes of any diameter. It will here be explained that each form of means for raising and lowering the lever 32 includes elements for positively depressing and elevating the frame without depending upon springs and counterweights, whereby a prompt and effective engagement and disengagement of the cutter with respect to the work is insured.

Having thus described the invention, what is claimed is 1. A tube-cutting machine having a rotary cutter-disk, a work-holder which is adjustable in a lane at substantially right an les to that o the cutter and provided wit a pair of spaced antifriction work-supporting rollers dlsposed in substantial parallelism with the axis of the cutter-disk, and means to fix the holder when adjusted.

2. A tube-cutting machine having a rotary cutter-disk, a work-holder having a pivotal adjustment in a lane at substantially right angles to that of the cutter and carrying a pair of spaced antifriction work-supporting rollers in substantial parallelism with the axis of the cutter-disk, and means to fix the work-holder when adjusted.

3. A tube-cutting machine having a rotary cutter-disk, an adjustable work-holder. provided with a pair of spaced antifriction work-sup orting rollers, and means to adjustably X the holder to setthe same with the rollers disposed at substantially right angles to the plane of the cutter-disk.

4. A tube-cutting machine havin a bed- -plate, a rotary cutter-disk, a wor -holder pivoted upon the bed-plate between the latter and the cutter, and an adjusting device for the holder including a threaded connection between the holder and the bed-plate to swing the holder upon its pivotal connection with the bedlate.

5. In a mac ne of the class described, the combination with a bedlate, of a workholder. pivotally connecte to the bed-plate and rovided with a pair of ears, one of the ears avin an arcuate slot struck from the pivot of t e work-holder as a center, a threaded pin carried by the bed-plate and loosely piercing the other ear, an adjustingnut u on thethreaded pin, a threaded pin carrie by the bed-plate and projecting through the slotted'ear, and a clamping-nut carried by the pin and engaging the slotted ear. I Y

i 6. In a machine of the class described, the,

combination with a support, of a drive-shaft mounted thereon, a frame mounted to swing upon the shaft as a pivotal support, a counter-shaft carried by the frame, a cutter car ried by the counter-shaft, gearing between upon the drive-shaft to swing concentrically thereon, a cutter carried by the frame a drive connection between the cutter-and the drive-shaft, and means for adjustably swinging the frame consisting of a lever mounted I upon the frame and atoggle connection between the lever and the frame. i

8. In a machine of the class described, the-- combination with a standard having an overhanging arm, of a drive-shaft carried by the standard, a yoke-shaped frame straddling the standard and pivotally mounted u on the shaft, a rotary cutter carried by the ee end of the frame, a drive connection between the cutter and the drive-shaft, a lever mounted upon the overhanging arm,"'and a toggle connection between the lever and the frame for swinging the latter upon the drive-shaft. 9. In a machine of the class described, the combination of a pedestal, a standard risin from one side of the pedestal and provide A.

with. an arm overhanging the to of the edestal, a substantially horizontal drive-s aft carried by the standard and projected at opposite sides thereof, a yoke-shaped frame straddling the standard and pivotally sup ported upon'thedrive-shaft, a counter-shaft carried by the frame, a rotary cutter upon the counter-shaft,a gear upon the countershaft, another gear mounted upon the frameand in mesh with the counter-shaft, a gear upon the drive-shaft and in mesh with the first-mentioned gear, a lever mounted upon the arm, and a toggle connection between the lever and the swinging frame. k

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two Witnesses. I o

. JOHN VV. FREEMAN Witnesses: l

JAMEs CAMPBELL.

W. s; Born 

